CN103036875A - Processing device and recognition device for user identity - Google Patents
Processing device and recognition device for user identity Download PDFInfo
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- CN103036875A CN103036875A CN2012105171799A CN201210517179A CN103036875A CN 103036875 A CN103036875 A CN 103036875A CN 2012105171799 A CN2012105171799 A CN 2012105171799A CN 201210517179 A CN201210517179 A CN 201210517179A CN 103036875 A CN103036875 A CN 103036875A
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Abstract
The invention provides a processing device for user identity. The processing device for the user identity is applied to an access device, and comprises a first session processing unit, a first identification processing unit and a packets transmitting unit, wherein the first session processing unit is used for acquiring session features of user service messages from received user service messages and looking up a session table, and if a target is not hit, the session features are added to the session table. The first identification processing unit is used for modifying the user service messages, and adding user identify labels to the load of an internet protocol (IP) layer of the user service messages. The packets transmitting unit is used for transmitting the modified user service messages out. The invention further provides a recognition device for user identity applied to core equipment to match with the processing device for the user identity. The processing device and the recognition device for the user identity transmit the user service messages carried on a locating which usually can not be changed to a far-end of a network by skillfully using the session processing mechanism in a simple and effective mode, and enable the identification of the user identity to be more simple and reliable.
Description
Technical field
The present invention relates to data communication field, relate in particular to a kind of user identity processing method and device.
Background technology
Human work's various aspects of living have been goed deep in network application, and the manageability of the network user and network self seems and becomes more and more important.User behavior analysis is the important technical of the network user and network self-management.By user behavior analysis, can add up pattern, the access habits of large-scale consumer behavior, and then instruct the policy development of network flow management, strengthen simultaneously the safety monitoring ability of network traffics.Existing technical scheme is carried out the identification of customer flow usually based on the source IP in the IP header.Because each user has oneself independently IP address, so the webserver can be according to the unique definite user of source IP, to realize user identification function.
Along with the explosive increase of computer and other terminal quantities of accessing Internet, it is further nervous that the IP address resource also just seems.Also occupy today of main flow at IPv4, the general user almost applies for less than public network IP address.When enterprise applied for the IP address to the ISP of operator, the address of distributing only had several or tens IP addresses only.Obviously, the network user's demand can't be satisfied in these a small amount of IP addresses at all.In order to alleviate the implacable contradiction of Supply and Demand, use network address translation NAT technology just to become the inevitable choice of enterprise and ISP.
NAT can be converted to the private network IP address of this message inside public network IP address and send to the Internet when processing message, then by NAT its public network IP address is converted to private IP address from the data message of the Internet.NAT number indicates Intranet user by TCP or udp port on the specific implementation.Although the message purpose IP address that is sended over by the Internet is consistent, because it is different to send to the port numbers of each user's message, therefore can identify Intranet user with port numbers.So just can the shared public network IP of a plurality of Intranet users carry out access to netwoks.
Carry out the message distribution although NAT device can be identified the user, for typical client-server model, user's nonidentifiability may cause potential safety hazard on service end.Please refer to shown in Figure 1ly, Intranet user is by an equipment online of opening nat feature, and this moment, the source IP of all user's messages that the webserver is received was same (public network address on the NAT), the webserver user that at all has no idea to identify.If the webserver wants to identify the user, can only arrive the corresponding relation that concrete NAT device is searched the NAT conversion, yet such technology realizes and uses all very complicated.In real network, ISP often can use the multi-level NAT technology in addition, and this has increased the complexity of consumer positioning especially greatly, and server end identification user becomes more and more difficult under such scene.
Summary of the invention
In view of this, the invention provides a kind of user identity processing unit, it is applied on the access device, and this device comprises the first message retransmission unit, the first Dialog processing unit and the first identification process unit, wherein:
The first Dialog processing unit is for the session characteristics that obtains this customer service message from the customer service message that receives; And search conversational list according to this session characteristics, if do not find, then add to this session characteristics in the conversational list and turn the first identification process cell processing;
The first identification process unit is used for revising this customer service message, adds User Identity in the IP layer load of this customer service message;
The first message retransmission unit is used for amended customer service message repeating is gone out.
The present invention also provides a kind of user identity identification device, and it is applied on the nucleus equipment, and this device comprises that this device comprises the second message retransmission unit and the second Dialog processing unit, wherein:
The second Dialog processing unit is for the session characteristics that obtains this customer service message from receiving the customer service message; And search conversational list according to this session characteristics, if do not find, then the User Identity correspondence of carrying in this session characteristics and this customer service message IP layer load is added in the conversational list to set up the corresponding relation of session characteristics and User Identity;
The second message retransmission unit is used for the customer service message repeating is gone out.
The present invention is carried at User Identity the far-end that is delivered to network on the position that usually can not be modified by the ingenious Dialog processing mechanism of utilizing of simple and effective way, so that the identification of user identity becomes more simple and reliable.
Description of drawings
Fig. 1 is a kind of networking diagram that typically contains NAT device.
Fig. 2 is the networking diagram of a kind of typical application scenarios of the present invention.
Fig. 3 is the logical construction combination schematic diagram of one embodiment of the present invention access device side and nucleus equipment side.
Fig. 4 is a kind of schematic diagram of IP header form.
Fig. 5 is a kind of schematic diagram of TCP header form.
Fig. 6 is a kind of schematic diagram of UDP header form.
Embodiment
The present invention introduces User Identity in IP message load, stamp User Identity in front end access device side, the nucleus equipment side just can identify user identity according to User Identity in the rear end, in conjunction with Dialog processing mechanism, allow user identity effectively pass NAT device and can not be modified, for back-end processing provides very big facility, and can develop various application on the basis of identifying user identity.Below introduce general realization flow of the present invention by embodiment.
Please refer to Fig. 2 to Fig. 3, the present invention realizes the present invention by doing corresponding change in access device side and nucleus equipment side.So-called access device and nucleus equipment are comparatively speaking, and access device is more close user's equipment, such as the low side Ethernet switch; The normally relative network equipment away from the user of nucleus equipment is such as more jumbo Ethernet switch or large-scale router etc.
Please refer to Fig. 3, be embodied as example with computer software, present embodiment provides a kind of user identity processing unit, and it is applied on the access device, and this device comprises the first message retransmission unit, the first Dialog processing unit and the first identification process unit.In the nucleus equipment side, the present invention provides a kind of corresponding user identity identification device equally, and this device comprises the second message retransmission unit, the second Dialog processing unit, the second identification process unit and audit processing unit.In software realization mode, the equipment of two correspondences of above-mentioned two device operations participates in realizing following handling process.
Step 101, access device receives the service message from the user;
Step 102, the first Dialog processing unit obtains the session characteristics of customer service message;
Step 103, conversational list is searched according to session characteristics in the first Dialog processing unit, if find the continuation subsequent treatment, otherwise adds to this session characteristics in the conversational list and turns step 104;
Step 104, this service message is revised in the first identification process unit, adds User Identity in the IP layer load of this service message;
Step 105, the first message retransmission unit forwards amended service message;
Step 106, NAT device carries out the NAT conversion to service message;
Step 107, nucleus equipment receive the customer service message that forwards from access device;
Step 108, the second Dialog processing unit obtains the session characteristics of this customer service message;
Step 109, the second conversational list is searched according to session characteristics in the second Dialog processing unit, if find the continuation subsequent treatment, processes otherwise this session characteristics and corresponding User Identity added in the second conversational list and turn step 110;
Step 110, this service message is removed to reduce with the User Identity that carries in this service message in the second identification process unit;
Step 111, the audit processing unit will comprise that the audit information of User Identity sends to audit server;
Step 112, the service message after the second message retransmission unit will reduce forwards;
Please refer to Fig. 3, the service message that sends during customer access network (also can be called abstractively customer flow) can be forwarded to Wide Area Network from LAN by access device and get on.In this course, the customer service message may be processed through NAT.And the NAT processing can cause user's source IP address to change.Because during the NAT of current trend processed, normally a plurality of users shared a public network IP address, distinguish the user in this locality by the TCP/UDP port numbers.It is identical that such processing has caused the source IP address through a plurality of users after the NAT, can't be distinguished by source IP address, also can't distinguish by port numbers, because the differentiation of port numbers is only effectively local at NAT device.
In the present invention, message is after arriving access device, and access device can be that unit inserts User Identity according to session.In fact, choosing of User Identity itself is very flexibly, and the hardware identifier such as MAC Address that can user's terminal or CPU also can be the sign on the logical meanings such as user account.Consider the convenience of existence and the global design of three-layer equipment and NAT device, User Identity normally is added in the load (being the data division of IP message) of IP message among the present invention, namely in the aspect more than the IP.Below provide the better implementation of two kinds of effects as example, those of ordinary skills can design as required with reference to following example the interpolation of the specific implementation User Identity of other same designs.
Example 1: please refer to Fig. 4 and 5, what suppose carrying in the IP message (customer service message) is TCP message (load that is equivalent to the IP message), and this moment, User Identity can be added on the Option(option of TCP head) in the field.The Option field is normally reserved, for the developer.Transmit and the NAT processing procedure at three layers of message experience on the way, the Option field can not revised usually, so User Identity can successfully be carried in the message and arrives nucleus equipment by Internet Transmission.
Example 2: please refer to Fig. 4 and Fig. 6, what suppose to carry in the IP message is UDP message (load of IP message), this moment, User Identity can be added on the afterbody of UDP message load, and the length that User Identity need to take can be self-defined, such as 8 bytes etc.In this mode, because the loaded length of UDP increases, correspondingly the length information in IP header and the UDP header also needs to revise.But in preferred mode, the length information of corresponding modify IP header of the present invention, the length information in the UDP head then can not revised.The benefit of doing like this is: because equipment is only processed in the IP aspect usually on the way, transmit or NAT such as three layers, can relate at most the modification of port numbers in transportation level, therefore the length value of revising the IP header can guarantee that message can not be dropped substantially, can improve thus the treatment effeciency of access device.This shows, although the length information of UDP head is not revised as correct value in the present embodiment, arrive before the nucleus equipment, can't have any impact to the processing of equipment on the way.Therefore User Identity usually can successfully be carried at and arrive nucleus equipment in the message.
When the customer service message arrives access device, access device can be known user's MAC Address or the combination of MAC Address+source IP address easily, suppose that User Identity is MAC Address, access device can easily be finished sign interpolation work, if the sign of other classes then can realize by the mode that craft or server are assisted.In preferred mode, consider if each message adds the decline that sign can cause treatment effeciency, so the present invention will enter in the phone making, User Identity can only be added in first message of session.
That five-tuple (source IP, purpose IP, protocol type, source port, destination interface) is as example take session characteristics, if the existence of NAT is arranged between access device and the nucleus equipment, because source IP address can be modified, the session characteristics of the session characteristics on the access device and nucleus equipment is certainly different so.But it should be apparent that the session characteristics on two equipment can be in this session of local unique identification.The present invention considers session characteristics in these characteristics of uniqueness of this locality, has therefore designed the mechanism of inserting User Identity in first message of session.Can get up with existing Dialog processing mechanism compatibility well like this.At present a lot of network equipments all can be set up session entry.Its processing procedure then is: search conversational list according to the session characteristics of this message when processing message, if can hit a list item, illustrate that then this message is the subsequent packet of the session that existed, if do not hit then illustrate that current service message is the literary composition of reporting for the first time in the new session, need to out add the session feature extraction in the conversational list to this moment.Ingenious multiplexing this ripe design of the present invention is further added User Identity to current this session literary composition of reporting for the first time adding session entry in conversational list when.If the session characteristics of a message can find certainly, then need not to add User Identity in conversational list.Such processing mode can reduce the processing pressure of access device (disposal ability is lower usually) greatly, helps widely commercial the application.
From the nucleus equipment side, nucleus equipment equally can the maintain sessions treatment mechanism, different from access device is, the second Dialog processing unit of nucleus equipment determines that the current business message is reporting for the first time during literary composition of new session, it is except adding to the session feature in the conversational list, and the User Identity that also needs to carry in this service message adds in the conversational list.Here said conversational list is on the logical meaning, in fact may be the existence form of many tables.So nucleus equipment just can be set up the corresponding relation of session characteristics and User Identity.Because the existence of such corresponding relation, nucleus equipment just can pick out each user's identity exactly, and as the audit basis, the developer just can design and develop out various application based on user identity on this basis with it.Be applied as example with audit, the audit processing unit then can be organized various audit informations according to session characteristics, and audit information can comprise various simple or complicated user access activity information.In the present invention, the audit processing unit can be come in User Identity as a kind of adding of audit information, then send to the server of far-end.Because User Identity can identify user identity exactly, so the accuracy that follow-up audit is processed improves greatly.
As previously mentioned, because the access device side is added User Identity in the literary composition of reporting for the first time of session to, that is to say that in fact these customer service messages have been modified; For service server (such as Web server) can receive these messages more reliably.The second identification process unit on the nucleus equipment can further be done reverse User Identity and remove processing.Correspondingly, for transport layer be the situation User Identity among the corresponding removing TCP head Option then of TCP message; For the UDP message, then need to remove the User Identity of UDP load afterbody.Because access device has been revised the length information of IP head, the length information of unmodified UDP head, IP head length information then need to be revised equally again in the second identification process unit, the length information of UDP head does not then need to revise, be equivalent to reduce the customer service message, the session that namely once the was modified literary composition of reporting for the first time.
Need to prove, the second identification process unit also can not done reduction and process, because a lot of service servers are after the IP layer is finished dealing with, amended IP header can be peeled off, then can directly obtain the data of head back according to the UDP length information in the UDP aspect, the user ID of therefore adding is on the not impact of Business Processing of a lot of service servers.Same reason is not reduced for the TCP message and can be accepted by service server under many circumstances yet.The service message that whether needs to reduce depends on how the developer treats the balance between treatment effeciency and the reliability.When needs higher height reason efficient, then do not need to reduce service message, reduce the nucleus equipment processing pressure.Process when makeing mistakes when the developer worries more that message does not reduce to cause, then need to reduce service message, improve reliability.
The present invention is by adding User Identity in the load of IP message, can not affect in the situation that the customer service message transmits in network, assist accurately and effectively the nucleus equipment of rear end to identify user identity, for various application based on user identity provide good technical foundation.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (12)
1. user identity processing unit, it is applied on the access device, and this device comprises the first message retransmission unit, the first Dialog processing unit and the first identification process unit, it is characterized in that:
The first Dialog processing unit is for the session characteristics that obtains this customer service message from the customer service message that receives; And search conversational list according to this session characteristics, if do not find, then add to this session characteristics in the conversational list and turn the first identification process cell processing;
The first identification process unit is used for revising this customer service message, adds User Identity in the IP layer load of this customer service message;
The first message retransmission unit is used for amended customer service message repeating is gone out.
2. device as claimed in claim 1 is characterized in that, when described IP layer load comprised the TCP message, the first identification process unit was further used for described User Identity is added in the Option field of TCP header.
3. device as claimed in claim 1 is characterized in that, when described IP layer load comprised the UDP message, the first identification process unit was further used for described User Identity is added to the afterbody of UDP message load.
4. device as claimed in claim 3 is characterized in that, described the first identification process unit is further used for revising the length information of IP header.
5. device as claimed in claim 1 is characterized in that, described session characteristics is the five-tuple of customer service message.
6. user identity identification device, it is applied on the nucleus equipment, and this device comprises that this device comprises the second message retransmission unit and the second Dialog processing unit, is characterized in that:
The second Dialog processing unit is for the session characteristics that obtains this customer service message from receiving the customer service message; And search conversational list according to this session characteristics, if do not find, then the User Identity correspondence of carrying in this session characteristics and this customer service message IP layer load is added in the conversational list to set up the corresponding relation of session characteristics and User Identity;
The second message retransmission unit is used for the customer service message repeating is gone out.
7. device as claimed in claim 6 is characterized in that, also comprises the second identification process unit, is used for this customer service message of reduction before forwarding the packet away, carries User Identity in the IP layer load with this customer service message and removes.
8. device as claimed in claim 7 is characterized in that, when described IP layer load comprised the TCP message, the second identification process unit was further used for the User Identity in the Option field of described TCP header is removed.
9. device as claimed in claim 7 is characterized in that, when described IP layer load comprised the UDP message, the second identification process unit was further used for the User Identity of described UDP message load afterbody is removed.
10. device as claimed in claim 9 is characterized in that, described the second identification process unit is further used for revising the length information of IP header.
11. device as claimed in claim 6 is characterized in that, described session characteristics is the five-tuple of customer service message.
12. device as claimed in claim 6 is characterized in that, also comprises the audit processing unit, is used for comprising that the audit information of User Identity sends to audit server.
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| CN104734897A (en) * | 2013-12-18 | 2015-06-24 | 国家计算机网络与信息安全管理中心 | Conversation alignment and forwarding system |
| CN105591765A (en) * | 2014-10-20 | 2016-05-18 | 中国电信股份有限公司 | Flow positioning method, device and system |
| CN106059883A (en) * | 2016-05-20 | 2016-10-26 | 浙江宇视科技有限公司 | Message transmission method and device |
| CN108173695A (en) * | 2017-12-29 | 2018-06-15 | 深信服网络科技（深圳）有限公司 | A kind of cloud environment down-off monitoring system and method |
| CN108449392A (en) * | 2018-03-01 | 2018-08-24 | 深圳市创梦天地科技有限公司 | Equipment identification device, method, electronic equipment and storage medium |
| CN110519292A (en) * | 2019-09-06 | 2019-11-29 | 赛尔网络有限公司 | For the coding method of social networks, social contact method, device, equipment and medium |
| CN112261134A (en) * | 2020-10-21 | 2021-01-22 | 阳光保险集团股份有限公司 | Network data access auditing method, device, equipment and storage medium |
| CN113905364A (en) * | 2021-10-25 | 2022-01-07 | 广州通则康威智能科技有限公司 | Router uplink data tracing method and device, computer equipment and storage medium |
| CN115037793A (en) * | 2022-08-12 | 2022-09-09 | 南京中孚信息技术有限公司 | User datagram protocol data processing method and device and electronic equipment |
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| CN115037793A (en) * | 2022-08-12 | 2022-09-09 | 南京中孚信息技术有限公司 | User datagram protocol data processing method and device and electronic equipment |
| CN115037793B (en) * | 2022-08-12 | 2022-11-04 | 南京中孚信息技术有限公司 | User datagram protocol data processing method and device and electronic equipment |
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Address after: Binjiang District and Hangzhou city in Zhejiang Province Road 310051 No. 68 in the 6 storey building Patentee after: Hangzhou Dipu Polytron Technologies Inc Address before: Binjiang District and Hangzhou city in Zhejiang Province Road 310051 No. 68 in the 6 storey building Patentee before: Hangzhou Dipu Technology Co., Ltd. |
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